Android App Development for ELM327 Adapter

@eclairios

Hello, I understand you need a streamlined Android application to pair with an ELM327 Bluetooth OBD-II adapter for essential diagnostic tasks. My expertise is perfectly suited to build this clean, lightweight tool, focusing solely on live RPM, battery voltage, and robust trouble code management without unnecessary frills. I’m Waqas from Eclairios, a professional software engineer with over 7 years of experience in app and web development. I have successfully completed 128 projects, earning a 5.0 rating from satisfied clients. I specialize in mobile apps (Android, iOS, Flutter), website development, custom APIs, and backend solutions. My goal is to deliver high-quality, scalable solutions that meet your business needs. Why hire me? ★ 100+ Projects Completed with 5-star rating. ★ 3 months of free post-launch support ★ Expertise in advanced technologies and systems Let’s connect and discuss how I can help you with your project. Best regards, Waqas

@Julian29

Hello, I have over 10 years of experience building Android applications, including projects that interact with hardware via Bluetooth. I can create a lightweight, efficient app that pairs seamlessly with an ELM327 OBD-II adapter, maintaining a stable connection and providing real-time engine RPM and battery readings. The app will include a single button to read and clear stored trouble codes, with smooth, reliable updates and a minimal, intuitive interface. I will use Kotlin or Java with standard Bluetooth APIs to ensure fast, stable performance. I am confident in delivering a fully functional Android Studio project with clean, well-commented code, a signed APK ready for installation, and a clear README detailing pairing instructions and the PIDs used. This approach ensures a reliable tool from zero to final testing. Thanks

@a4logic

Hello, As an experienced mobile app developer with a strong background in Android and Kotlin, I can confidently say that this project is well within my capabilities. My team at Our Software has handled similar projects successfully and have developed a reputation for delivering high-quality, user-friendly apps. Combining your clear requirements with our technical know-how, I am confident we will fulfill all your goals meticulously and on-time. thKotlin's seamless integration with the Android platform means your app would be built using the most efficient technologies available. Additionally, being based in Pakistan, we also offer competitive pricing without compromising on quality. To further assure you of our abilities, we're open to providing sample works showcasing our skills with Bluetooth APIs and designing minimal yet effective interfaces upon your request. In addition, for your peace of mind and convenience, we will provide a detailed README file explaining the pairing process and the PIDs incorporated. Overall, partnering with us will not only ensure swift and expert completion of your project but also guarantee excellent customer service throughout our journey together. Miracles happen when backed by strong belief, so let's turn your app idea into an undeniable reality that surpasses your expectations! I look forward to discussing further details and answering any queries you might have. Thanks!

@abhisaini0188

Hello, Thank you so much for posting this opportunity. It sounds like a great fit, and I’d love to be part of it! I’ve worked on similar projects before, and I’m confident I can bring real value to your project. I’m passionate about what I do and always aim to deliver work that’s not only high-quality but also makes things easier and smoother for my clients. Feel free to take a quick look at my profile to see some of the work I’ve done in the past. If it feels like a good match, I’d be happy to chat further about your project and how I can help bring it to life. I’m available to get started right away and will give this project my full attention from day one. Let’s connect and see how we can make this a success together! Looking forward to hearing from you soon. With Regards! Abhishek Saini

@SBITServices

Hi Andrea, I will develop an Android app that pairs with an ELM327 Bluetooth OBD-II adapter. The app will connect, read live PIDs for engine RPM and battery voltage/status, and allow the user to read and clear trouble codes. The project will be developed in either Kotlin or Java using standard Bluetooth APIs. Let's discuss further details. Regards, Sai Bhaskar

@rbtech1984

Hello There!!! ⚜⭐⭐⭐⭐⚜(( Lightweight Android app for ELM327 with fast live PID updates ))⚜⭐⭐⭐⭐⚜ This brief is refreshingly precise. You want a focused Android tool that pairs quickly with an ELM327 adapter and does only what matters, without the noise and complexity of full diagnostic suites. The core requirement is a stable Bluetooth connection, fast live reading of engine RPM and battery voltage, and a simple read and clear flow for trouble codes. Reliability, response time, and clarity on screen are clearly more important than feature volume or visual polish. I have built Android apps that communicate with hardware over Bluetooth, handle continuous data polling, and keep connections alive without draining resources. I am comfortable working in Kotlin or Java, using standard Android Bluetooth APIs and well tested ELM327 PID commands with clean threading and UI updates. My approach would be to prioritize connection speed, hard code only the required PIDs, and keep the UI minimal so values refresh smoothly and predictably during real world driving tests. Key features I would focus on: * Fast and reliable Bluetooth pairing with ELM327 * Smooth live RPM and battery status updates * One tap read and clear flow for trouble codes If you would like, I can outline a short timeline and confirm the exact PID set before starting so testing with your dongle is straightforward. Warm Regards, Farhin B.

@GameOfWords

Android App Development for ELM327 Adapter I’m a full-stack software engineer with expertise in React, Node.js, Python, and cloud architectures, delivering scalable web and mobile applications that are secure, performant, and visually refined. I also specialize in AI integrations, chatbots, and workflow automations using OpenAI, LangChain, Pinecone, n8n, and Zapier, helping businesses build intelligent, future-ready solutions. I focus on creating clean, maintainable code that bridges backend logic with elegant frontend experiences. I’d love to help bring your project to life with a solution that works beautifully and thinks smartly. To review my samples and achievements, please visit:https://www.freelancer.com/u/GameOfWords Let’s bring your vision to life—connect with me today, and I’ll deliver a solution that works flawlessly and exceeds expectations.

@durgesh8527

My name is Pallavi and I specialize in full-stack software engineering. With over 12 years of experience, I've honed my skills in various areas that extend far beyond WordPress and Shopify. One of my expertise lies in Android App Development - precisely what you need for your ELM327 Adapter project. I am well-versed in both Kotlin and Java inside Android Studio and have a profound understanding of the standard Bluetooth APIs, which are necessary for this task. My commitment to timeliness and delivering top-notch results has allowed me not only to meet but also exceed client expectations in the past. I have a hands-on understanding of diverse programming languages such as ReactJs, PHP, MongoDB, ExpressJs, etc., along with utilizing powerful API integrations like JSON API .Net and integrating them smoothly into the project structure. This will be crucial for maintaining the live connection with your ELM327 device and refreshing smooth updates on screen, as per your specifications. Additionally, my familiarity with working on projects with specific constraints will come into play here too. I guarantee your connection will succeed within 10 seconds, RPM values update at least twice per second, and clearing codes return the standard success response.

@Mahihassi

As an experienced Software Engineer, my passion is to leverage technology to solve complex problems efficiently and creatively. Your Android project involving the development of an application that pairs with the ELM327 Bluetooth OBD-II adapter connects deeply with my skillset. I have years of experience in not just Android Development but also embedded systems, IoT and C/C++ programming – skills that are best suited for building specialized software like this. I am confident in my ability to create a clean, lightweight app that caters specifically to your diagnostic needs, minimizing any unnecessary features or complexity often found in broader tools. My proficiency in Java/ Kotlin and Android Studio will ensure not only quality code but also a well-commented project facilitating easy future maintenance. Furthermore, my knowledge in Linux coupled with circuit design could give us an edge during those little tweaks or changes you might require post-development. I always strive for on-time delivery and I can guarantee a fully functional APK to load directly onto your phone with comprehensive instructions on pairing your ELM327 dongle and detailing which specific PIDs were employed. I have grasped the project's requirements thoroughly and assure you satisfactory results within your given timeline. Let's get started!

@abdulhadi999

You want a clean, lightweight Android app that pairs with a standard ELM327 Bluetooth OBD-II adapter and performs only essential diagnostics—fast connection, live RPM/battery data, and a simple read/clear DTC flow. I can deliver this exactly as specified. → Core Implementation . Bluetooth discovery, bonding, and stable connection using Android Bluetooth APIs . ELM327 command handling with keep-alive logic . Live PID reads for engine RPM (010C) and battery voltage/status (0142 or adapter-supported AT RV) . UI refresh ≥ 2x per second with smooth updates . Single toggle button: read stored trouble codes → clear codes (03 / 04 commands) → Technical Approach . Kotlin (or Java if preferred) in Android Studio . Hard-coded PID queries (no dynamic builders) . Minimal UI: two large numeric fields + one action button . Clean threading to avoid UI blocking and connection drops . Robust error handling for timeouts and reconnects → Deliverables . Full Android Studio project with well-commented source . Signed release APK ready to sideload . Short README: pairing steps, supported PIDs, and usage notes → Acceptance Alignment . Connection within 10 seconds . RPM updates at least twice per second . Standard success response on clearing codes → Timeline . Development + testing: 2–3 days . Final APK + docs: 1 day If you have a specific ELM327 variant or Android version to target, let me know—I can tune timing and commands accordingly. Best regards, Abdul Hadi Android App Developer

@rosscarter1011

Do you have a preferred Bluetooth library—such as Android-Bluetooth-SPP**—to manage the RFCOMM socket connection, or would you like me to use the standard **Android Bluetooth APIs for maximum compatibility with ELM327 clones? Since you require smooth real-time updates for RPM and battery voltage, I will implement a dedicated background thread to handle the sequential AT commands and PID queries, ensuring the UI remains responsive while maintaining a stable data refresh rate of at least 2Hz. One of the main challenges with ELM327 adapters is handling the variety of "knock-off" chips that may respond differently to standard OBD-II commands. My approach is to use robust error-handling for the serial communication and a hard-coded command sequence—like 010C for RPM and 0142 for control module voltage—to guarantee that your lightweight tool connects reliably within 10 seconds and provides accurate diagnostic data. I have solid experience in developing native Android applications and working with Bluetooth communication for automotive and IoT projects. I focus on making smart, efficient improvements that result in a faster, cleaner, and more professional diagnostic tool without unnecessary complexity or risk. Let’s connect on chat and drop me a message to start right away.

@maisamraza1996

Hi, I'd be excited to build your lightweight ELM327 OBD-II diagnostic app. This is a straightforward project that plays to my strengths in Bluetooth integration and hardware communication. What I'll Deliver: Reliable ELM327 Connection: Bluetooth discovery, pairing, and persistent connection using Android Bluetooth APIs—connects within 10s Live PID Reading: Engine RPM (PID 0x0C) and battery voltage (PID 0x42) refreshing 2+ times/second with smooth UI updates DTC Management: Single button to read stored trouble codes (Mode 03) and clear them (Mode 04) with success confirmation Minimal, Focused UI: Two large numeric displays (RPM/Battery) + Read/Clear button—no bloat Clean Kotlin Code: Well-commented source explaining ELM327 AT commands, PID queries, and response parsing Signed Release APK: Ready to install on your device Setup README: Pairing instructions, PID reference, troubleshooting tips Technical Approach: Hard-coded AT commands (ATZ, ATE0, ATL0, etc.) Direct PID queries (01 0C for RPM, 01 42 for voltage) Background thread for continuous polling UI updates via Coroutines/Handler Tested with standard ELM327 v1.5 protocol Timeline: 5-7 days for complete delivery. Ready to discuss your specific ELM327 model and start building! Best regards, Maisam Raza Android Developer

@mobiwebsolutions

Hi There!!! !!>>> THE PROJECT GOAL IS TO DEVELOP A LIGHTWEIGHT ANDROID APP FOR ELM327 BLUETOOTH OBD-II ADAPTER WITH BASIC DIAGNOSTIC FUNCTIONS <<<!! I have carefully reviewed your project details and understand the need for a minimal, reliable app that connects via Bluetooth, reads engine RPM and battery status, and can read/clear trouble codes quickly. I am the best fit because I have strong experience in Android Bluetooth development and Kotlin/Java apps. Relevant points: implement stable ELM327 Bluetooth connection, display live RPM and battery values, and read/clear DTC trouble codes with a single button. I will provide UI design, basic data management for PIDs, full testing, well-commented source code, and an easy-to-follow README for pairing and usage. I have 9+ years experience as a full stack developer and have built Android diagnostic and IoT apps using Bluetooth connectivity and real-time data display. Similar projects include car diagnostic apps and sensor monitoring tools with clean minimal UI for quick interactions. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!

@techsty2014

Hello there, I can develop a streamlined Android app using Kotlin or Java to pair seamlessly with your ELM327 Bluetooth OBD-II adapter. The app will focus on essential diagnostics: connecting to the adapter, displaying live engine RPM and battery voltage, and managing trouble codes. The interface will be minimalistic, ensuring a smooth user experience with two large numeric fields and a simple read/clear button. For the Bluetooth connection, I'll use standard APIs to ensure reliability and a quick connection within 10 seconds. The app will refresh RPM values twice per second, meeting your performance requirements. I will provide a complete Android Studio project, a signed APK for easy installation, and a README for setup guidance. Questions: • Do you have a preference for the app’s color scheme or layout style? • Are there any specific testing conditions or environments I should be aware of? Looking forward to delivering a lightweight and efficient tool for your diagnostic needs. Thanks and best regards, Faizan

@shanec35

Hi there, I’ve carefully analyzed your requirement for a lightweight Android app that pairs with an ELM327 Bluetooth OBD-II adapter and performs a focused set of diagnostic tasks. I’ve built similar Android tools that handle stable Bluetooth connections, issue hard-coded PID commands, and display live vehicle data smoothly without the overhead of full diagnostic suites. The key aspects here are fast and reliable ELM327 pairing, maintaining a stable Bluetooth link, polling RPM and battery PIDs at a smooth refresh rate, and implementing a clean read/clear trouble code flow with standard success responses. I’d implement this in Kotlin or Java using Android’s Bluetooth APIs, a simple command loop for RPM and voltage, and a minimal UI with large, readable values, delivering a clean, well-commented Android Studio project and a signed release APK. I’m available to begin work immediately and committed to delivering a reliable, easy-to-test app that meets your acceptance criteria within the shortest possible timeframe. Best regards, Elenilson

@teodorgeorge

Hello, I can create a simple Android app that connects to your ELM327 Bluetooth OBD-II adapter and performs the exact tasks you described. The app will have a clean interface with live display of engine RPM and battery voltage, plus a single button to read and clear trouble codes without extra features. I will develop it in Kotlin or Java using standard Bluetooth APIs for reliable connection and smooth PID updates. You will receive the full Android Studio project with detailed comments, a signed APK, and a README explaining pairing and used PIDs. This will ensure an easy setup and straightforward usage according to your requirements. Thanks, Teo

@DigitaSyndicate

⚠️You are not looking for a coder. You are looking for someone who can build this properly. That is exactly why your project stood out.⚠️ Your requirement for a clean, lightweight Android app that pairs seamlessly with an ELM327 Bluetooth OBD-II adapter and delivers reliable live PID readings and trouble code management reflects a focus on precise, streamlined system design—exactly the approach we champion at DigitaSyndicate. At DigitaSyndicate, a UK-based digital systems agency, we build precision-engineered automation, modern web platforms, and AI-driven systems designed for performance and long-term scalability. Your need for a minimal interface with robust connectivity and accurate diagnostics aligns perfectly with our commitment to developing intuitive, reliable, and future-proof digital solutions. We recently delivered a vehicle diagnostics tool with similarly stringent performance and timing requirements, ensuring stable Bluetooth interaction and real-time data updates. Can you share your main priorities and timeline so I can map out the right execution plan for you? Casper M. Project Lead | DigitaSyndicate Precision-Built Digital Systems.

@arehman171

Hi there, I have gone through your project description. Having successfully developed Android applications for over 3 years, my team is well-versed in both Java and Kotlin, making us ideal candidates for the task. Not only are we comfortable with using standard Bluetooth APIs or lightweight libraries to expedite development, but we also bring to the table a firm grasp of PID queries so as to avoid any unnecessary complexities. We understand that you're looking for a clean, lightweight tool, and that's precisely where our strength lies. Our approach is always centered around providing an uncomplicated yet efficient user experience, which aligns perfectly with your vision for this project. Moreover, our commitment to producing clean and well-commented code ensures future maintainability and scalability of the application. Let's chat to proceed.

@prashjain92

Hello, I understand you want a CLEAN, LIGHTWEIGHT Android app that pairs with an ELM327 Bluetooth OBD-II adapter to perform a limited set of diagnostic tasks reading engine RPM, battery voltage/status, and retrieving/clearing stored trouble codes without unnecessary complexity or extra features. The app should connect quickly, maintain a stable link, and provide smooth, responsive updates. I’m a senior Android developer with over 6 YEARS of experience building custom Bluetooth and diagnostic apps and have completed SIMILAR PROJECTS involving ELM327 and vehicle telemetry. In these projects, I focused on stable Bluetooth connections, efficient PID reading, minimalistic UIs, and well-structured, maintainable code so clients could manage the app easily. For your needs, I will deliver a FULL ANDROID STUDIO PROJECT in Kotlin or Java with well-commented source code, a signed release APK ready to install, and a concise README explaining pairing and the PIDs used. The app will connect to your ELM327 device within 10 seconds, update RPM and battery values smoothly, and allow reading and clearing trouble codes with a single button. I ALSO OFFER THREE MONTHS OF SUPPORT AFTER DELIVERY TO ENSURE EVERYTHING RUNS SMOOTHLY, AND I’D BE HAPPY TO SHARE EXAMPLES OF PAST OBD-II OR BLUETOOTH PROJECTS IN A PRIVATE CHAT. Best regards, Prasham Jain